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sergey [27]
3 years ago
5

A spring is hung from the ceiling. When a block is attached to its end, it stretches 2.6 cm before reaching its new equilibrium

length. The block is then pulled down slightly and released. What is the frequency of oscillation?
Physics
1 answer:
Kaylis [27]3 years ago
7 0

Answer:

f = 3.09 Hz

Explanation:

This is a simple harmonic motion exercise where the angular velocity is

         w² = \frac{k}{m}

to find the constant (k) of the spring, we use Hooke's law with the initial data

         F = - kx

where the force is the weight of the body that is hanging

        F = W = m g

we substitute

        m g = - k x

        k = - \frac{m g}{x}

we calculate

        k = - \frac{9.8 m}{- 2.6 \ 10^{-2}}

        k = 3.769 10² m

we substitute in the first equation

       w² = \frac{ 3.769 \ 10^2 \ m }{m}

       w = 19.415 rad / s

angular velocity and frequency are related

       w = 2πf

        f = \frac{w}{2\pi }

        f = 19.415 / 2pi

        f = 3.09 Hz

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3 0
3 years ago
57. Estimate Potential Energy A boulder with a
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Answer: 4.9 x 10^6 joules

Explanation:

Given that:

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Since potential energy is the energy possessed by a body at rest, and it depends on the mass of the object (m), gravitational acceleration (g), and height (h).

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GPE = 4900000J

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GPE = 4.9 x 10^6J

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3 years ago
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7 0
3 years ago
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Solution :

a )

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b)

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